change the federal pay system to be an example for pay equality rather than perpetuate income inequality

Currently Federal employees are given an annual cost of living increase based on a percentage of their current income. This has the effect of widening the gap between the highest and lowest earners within the government. For example, a GS-7 makes $39,570 in 2015 and a GS-15 makes $116,021. Assuming a 2% raise every year for 30 years a GS-7 would make $71,676 while a GS-15 would make $210,156. This gives the GS-7 a wage increase of $32,106 and a GS-15 an increase of $94,135, thus perpetuating income inequality. I propose changing the methodology for pay increase from a percentage to a level used equally for all employees. When the President announces a 1% increase the total amount of money should be calculated and divided equally among employees, rather than favoring the top.